Technology innovation and practice of long span traditional pure stone structure: Case from pure stone archway in Baoji new executive square

Solidity is a fundamental of architectures, as well as guarantee for users´ safety. Advanced structure technology constitutes dominant force promoting construction to development fast. The stone component section stress distribution, state and nature are changed by prestressed technique, and made to satisfy safety standard. In addition, the stone cold brittle has been given some elastic-plastic improvement, and its application range has been widen. The puzzle that stone could not be used as building materials in large span bearing component is solved by combining prestressed technique with traditional tenon technology. Consequently, it provides theory basis for such project implementation.